Art, culture, entertainment, media and politics have never been truly exclusive or separate at least from the 20th century. UFA a pioneering film studio out of Berlin, was mandated in both the 1st and 2nd world wars into making propaganda movies, television and entertainment that was often seen as both “Art” (see Leni Riefenstahl) and propaganda (again, see Leni Riefenstahl).
Using entertainment (owned and controlled by private entitles) was represented in popular folk protest songs during Vietnam (record companies didn’t blush when helping to fund a war, whilst also profiting from anti war sentiments). The corporate and political world have melded long ago and there are far more examples I could bore you with.
These issues are not as simple as “Blizz is a private company so they can set their own rules” vs “People should be allowed to use a private platform to express their political beliefs”.
Both are valid, as politics and the private sector have become intertwined. When it comes to the people of HK, I think unless we belong to that sovereign Territory we should respect, listen and be mindful that whatever opinion we may hold, we do not speak or should address these issues as authorities. It’s only the people of HK Territory who truly have a right to that expression.